Subway style creation of pita sandwiches (select your toppings as they make your sandwich in front of you, through a glass window with latex gloves, of course). Customization is better than I thought. I've forgotten how many times I have to amend a falafel pita sandwich when I order it elsewhere.
Yes there are vegetarian options, but only if you don't mind the falafel or other veg ingredients on the same skillet right after they prepare someone else's beef.